Chinese start-up Prinano said it has validated mass production of photonic chips on 8-inch silicon wafers using technology other than conventional lithography tools at one tenth of the cost.Based in Hangzhou, Zhejiang province, the company said it worked with Shenzhen Litra Technology to make 8-inch optical chip wafers while “completely avoiding” the need for deep ultraviolet lithography (DUV), according to a Friday post on its WeChat account.Prinano said its PL-AS vacuum air-cushion...